(3) Moses went and repeated to the people all the commands of G-d and all the rules; and all the people answered with one voice, saying, “All the things that G-d has commanded we will do!”

(7) Then he took the record of the covenant and read it aloud to the people. And they said, “All that G-d has spoken, we will do and we will hear!”

Rabbi Elazar said: When the Jewish people accorded precedence to the declaration “We will do” over “We will hear,” a Divine Voice emerged and said to them: Who revealed to my children this secret that the ministering angels use? As it is written: “Bless the Eternal, you angels of G-d, you mighty in strength, that fulfill G-d's word, hearkening unto the voice of G-d's word” (Psalms 103:20). At first, the angels fulfill His word, and then afterward they hearken. Rabbi Ḥama, son of Rabbi Ḥanina, said: What is the meaning of that which is written: “As an apple tree among the trees of the wood, so is my beloved among the sons.” (Song of Songs 2:3)? Why were the Jewish people likened to an apple tree? It is to tell you that just as this apple tree, its fruit grows before its leaves, so too, the Jewish people accorded precedence to “We will do” over “We will hear.” The Gemara relates that a heretic saw that Rava was immersed in studying halakha, and his fingers were beneath his leg and he was squeezing them, and his fingers were spurting blood. Rava did not notice that he was bleeding because he was engrossed in study. The heretic said to Rava: You impulsive nation, who accorded precedence to your mouths over your ears. You still bear your impulsiveness, as you act without thinking. You should listen first. Then, if you are capable of fulfilling the commands, accept them. And if not, do not accept them. He said to him: About us, who proceed wholeheartedly and with integrity, it is written: “The integrity of the upright will guide them” (Proverbs 11:3), whereas about those people who walk in deceit, it is written at the end of the same verse: “And the perverseness of the faithless will destroy them.”

נעשה ונשמע (Na'aseh v'nishma), a reference to action designed to ensure that they could obey G-d’s directives without thought of any reward that might be in store for them by doing this. We find a similar construction in Psalms 103,20 עושי דברו לשמוע בקולו, “who do G-d's bidding, ever obedient to G-d's bidding.”